Abstract
The ultrastructure of chloroplasts in the primary leaf of 10-d-old bean plants (Phaseolus vulgaris L., cv. Cheren Starozagorski) was studied 3, 5, 24, 48, 72 and 168 h after a single treatment with simulated acid rain (pH 2.4, 2.2, 2.0 and 1.8). Different changes in chloroplast structure till full destruction of organelles were traced. A determining factor for these changes was the histological localization of chloroplasts. In the chloroplasts of palisade parenchyma different degrees of expansion of thylakoids (3, 5, and 24 h after the single treatment), and conformational changes of the inner membrane system (48, 72 and 168 h) were observed. The chloroplasts of spongy parenchyma showed a significantly higher degree of structure resistance. The expansion of thylakoids was weak and did not depend on the duration of treatment. The ultrastructural changes of chloroplasts confirmed relative resistance of this species till pH 2.0.
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Claims 7
Claim · model-written summary
Simulated acid rain produced chloroplast structural changes up to organelle destruction.
- Taxon
- Phaseolus Vulgaris
Phaseolus vulgarist0 - Treatment
- Simulated Acid Raint0
- Outcome
- chloroplast structuree0
- Direction
- full destructione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Different changes in chloroplast structure till full destruction of organelles were traced”
t0“Simulated Acid Rain on Chloroplast Ultrastructure of Primary Leaves of Phaseolus Vulgaris”
Claim · model-written summary
Histological localization determined the chloroplast changes.
- Taxon
- Phaseolus VulgarisPhaseolus vulgarist0
- Organ / stage
- histological localization of chloroplastse0
- Outcome
- these changese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A determining factor for these changes was the histological localization of chloroplasts”
t0“Phaseolus Vulgaris”
Claim · model-written summary
Palisade parenchyma chloroplast thylakoids expanded at 3, 5 and 24 hours.
- Taxon
- Phaseolus VulgarisPhaseolus vulgarist0
- Organ / stage
- palisade parenchymae0
- Treatment
- single treatmente0
- Outcome
- thylakoidse0
- Direction
- expansione0
- Qualifier
- 3, 5, and 24 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the chloroplasts of palisade parenchyma different degrees of expansion of thylakoids (3, 5, and 24 h after the single treatment)”
t0“Phaseolus Vulgaris”
Claim · model-written summary
Palisade parenchyma chloroplast membranes changed conformation at 48, 72 and 168 hours.
- Taxon
- Phaseolus VulgarisPhaseolus vulgarist0
- Treatment
- Simulated Acid Raint0
- Outcome
- conformational changes of the inner membrane systeme0
- Qualifier
- 48, 72 and 168 he0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“conformational changes of the inner membrane system (48, 72 and 168 h) were observed”
t0“Simulated Acid Rain on Chloroplast Ultrastructure of Primary Leaves of Phaseolus Vulgaris”
Claim · model-written summary
Spongy parenchyma chloroplasts showed greater structural resistance.
- Taxon
- Phaseolus VulgarisPhaseolus vulgarist0
- Organ / stage
- spongy parenchymae0
- Outcome
- structure resistancee0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chloroplasts of spongy parenchyma showed a significantly higher degree of structure resistance”
t0“Phaseolus Vulgaris”
Claim · model-written summary
Spongy parenchyma thylakoid expansion was weak and independent of treatment duration.
- Taxon
- Phaseolus VulgarisPhaseolus vulgarist0
- Treatment
- duration of treatmente0
- Outcome
- expansion of thylakoidse0
- Direction
- did not depende0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expansion of thylakoids was weak and did not depend on the duration of treatment”
t0“Phaseolus Vulgaris”
Claim · model-written summary
Chloroplast changes confirmed relative bean resistance to pH 2.0.
- Taxon
- Phaseolus VulgarisPhaseolus vulgarist0
- Outcome
- relative resistancee0
- Qualifier
- till pH 2.0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ultrastructural changes of chloroplasts confirmed relative resistance of this species till pH 2.0”
t0“Phaseolus Vulgaris”
The same questions in other papers
rainfall · soil: physics · Phaseolus vulgaris (common bean)Results agree
1 paper in the same direction as this paper
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.